Apparatus for repairing and correcting levels



April 1939. H. J. KLEINESCHAY 2,154,625

ARA US FOR REPAIRING AND CORRECTING LEVELS Filed Nov. 10, 1937 li y- {/156 ff K15111555 Patented Apr. 18, 1939 UNITED STATES APPARATUS FORREPAIRING AND- CORRECTING LEVELS Henry J. Kleineschay, Fond du Lac, Wis.Application November 10, 1937, Serial No. 173,919

3 Claims.

This invention relates to a method of and apparatus for checking andrepairing levels, straight edges and the like.

An important object of this invention is to provide a simple method andapparatus for supporting a level or straight edge on an adjustablesupport which has already been corrected by suitable means to conform toan imaginary line so that the gauge'to be corrected may be mountedthereon and corrected to conform thereto.

Another object of this invention is to provide improved means forsupporting a plumb by which the apparatus may be trued.

Other objects and advantages of the invention will hereinafter becomemore fully apparent from the following specification of which thedrawing forms a part, and wherein:

Figure 1 is a front elevational view of the invention,

Figure 2 is a side elevational view in fragment of the same,

Figure 3 is a front elevational view of the device mounted vertically,

Figure 4 is an enlarged vertical sectional View showing one unit of theinvention,

Figure 5 is a horizontal sectional view on line 5-5 of Figure 4,

Figure 6 shows a clip to support a plumb for alining the apparatus, and

Figure 7 is an enlarged perspective view of the clip.

Referring more particularly to the drawing wherein like referencecharacters designate like or corresponding parts throughout, ldesignates generally a bench or other supporting surface on which ismounted the two units II of the level checking apparatus.

Units II, which are identical, each comprise a threaded bolt I2 havingat one end fastening means l3 preferably in the form of a wood screw andin its opposite end a kerf or slot I4 by which the fastening means I 3may be secured in the top of bench Ill.

Mounted on bolt I2 is a locking nut I and a sleeve type adjustable nutl6 provided at one end with a head IT. A bracket or yoke I8 is providedwith the portions I9 and 20. Portion I9 as seen in Figure 5 is providedwith a slot 2I to receive bolt I2. Bracket I8 is mounted on bolt I2 withportion I9 clamped between locking nut I5 and the adjusting nut I6.

The bracket I8 extends upwardly and has a threaded opening 22 in portion20, which portion is above and in substantially the same vertical planeas portion I3 when bracket I8 is mounted lower unit II' on bolt I2.Mounted in opening 22 is a threaded clamping member 23 having at one enda knurled head 24 by which member 23 can be adjusted; and at itsopposite end a reduced headed shank 25 on which is swivelly mounted'acollar 26 having a depending annular flange.

The periphery of the adjusting nut I6 is knurled so that either or bothof these nuts I6 can be adjusted to a predetermined imaginary linedetermined by a level 21 having a spirit vial 28. After nuts I6 havebeen adjusted, the nuts I5 are moved up to clamp nuts I6 in adjustedposition. Another level 21 can then be positioned on heads I! afterwhich the clamping members 23 can be brought into clamping engagementwith the upper edge of the level 21 to hold it in position while beingchecked or repaired so that the vials 28 of the levels 21 willcorrespond.

In Figure 3 the units II are shown mounted in vertical relationship forthe purpose of testing and correcting the vials 29 mounted in openings30 in level 21 and at right angles to vial 28. The nuts I 6 are adjustedin the same manner as heretofore explained by means of an accurate level21 after which the vials 29 of other levels 27 may be clamped inposition for checking and repairing.

In Figure 6 the units II' and nuts I5 and I6 are mounted as in Figure 3for testing and correcting straight edges. In this case a plumb support3I comprising a spring clip 32, is frictionally clamped to the upper nutI 6, and is provided with a reduced shank 33 which is offset upwardlyfrom clip 32 and which is provided with a slot 34 at its free end toreceive and hold the line 35 of a plumb 36. The clip 32 is positioned sothat line 35 will touch the tip of head I 'I of the upper unit II' afterwhich the is adjusted and locked so that line 35 will be likewisetouching the lower nut I6 at its tip II. The units II are then ready fortesting and repairing straight edges.

From the foregoing it will be seen that an apparatus has been providedby which an improved method may be employed for testing and repairinglevels and straight edges which will simplify the operation and alwaysinsure accuracy in the testing.

It is to be understood that the apparatus as shown is only intended toillustrate a preferred embodiment, various changes may be resorted towithout departing from the spirit and scope of the invention ashereinafter claimed. Furthermore, it is to be understood that othermeans may be used to carry out the method without comprising bolt I2departing from the spirit and scope of the invention.

I claim as my invention:

1. In a device of the class described, a screw having a reduced threadedshank at one end adapted to engage a support, an internally threadedadjustable member mounted on said screw, a nut positioned beneath saidmember to retain it in adjusted position, a yoke projecting upwardlyfromsaid screw and having a slotted inturned end engaging the screw andclamped thereto by said adjustable member and nut, the opposite end ofsaid yoke being bent parallel to its other end and provided with athreaded opening, and a set screw mounted in said opening'to clamp oneend of a level between said set screw and adjustable member.

2. In a device for correcting and repairing levels, a supporting memberhaving a threaded shank, a nut mounted on said shank,-a socket nutmounted on said shank above said first mentioned nut, an arm having itsoppositeends bent to 'form parallelfflanges disposed atright anglesadapted to be secured to a suitable support, a

socket nut adjustably positioned on the upper end of said screw, abracket, means cooperating with said socket nut to clamp and supportsaid bracket, a set screw adjustably mounted in the opposite end of saidbracket in a plane with said socket nut to cooperate therewith inretaining one end of a spirit level in said device, said socket nutadapted to be adjusted to align the ends of the level.

HENRY J. KLEINESCHAY.

